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#ifndef DIAGRAMSCENE_H
#define DIAGRAMSCENE_H

#include <QGraphicsScene>
#include "diagramitem.hpp"
#include "diagramtextitem.hpp"

QT_BEGIN_NAMESPACE
class QGraphicsSceneMouseEvent;
class QMenu;
class QPointF;
class QGraphicsLineItem;
class QFont;
class QGraphicsTextItem;
class QColor;
QT_END_NAMESPACE

class DiagramScene : public QGraphicsScene
{
    Q_OBJECT

public:
    enum Mode { InsertItem, InsertLine, InsertText, MoveItem };

    /**
    * @brief Constructor for DiagramScene
    *
    * @fn DiagramScene(QObject *parent = 0)
    * @param parent
    */
    DiagramScene(QObject *parent = 0);

    /**
    * @brief Returns the font of this scene
    *
    * @fn QFont font() const
    */
    QFont font() const
        { return myFont; }

    /**
    * @brief Returns the textcolor of this scene
    *
    * @fn QColor textColor() const
    */
    QColor textColor() const
        { return myTextColor; }

    /**
    * @brief Returns the itemcolor of this scene
    *
    * @fn QColor itemColor() const
    */
    QColor itemColor() const
        { return myItemColor; }

    /**
    * @brief Returns the linecolor of this scene
    *
    * @fn QColor lineColor() const
    */
    QColor lineColor() const
        { return myLineColor; }

    /**
    * @brief Sets the linecolor of this scene
    *
    * @fn void setLineColor(const QColor &color)
    * @param color
    */
    void setLineColor(const QColor &color);

    /**
    * @brief Sets the textcolor of this scene
    *
    * @fn void setTextColor(const QColor &color)
    * @param color
    */
    void setTextColor(const QColor &color);

    /**
    * @brief Sets the itemcolor of this scene
    *
    * @fn void setItemColor(const QColor &color)
    * @param color
    */
    void setItemColor(const QColor &color);

    /**
    * @brief Sets the font of this scene
    *
    * @fn void setFont(const QFont &font)
    * @param font
    */
    void setFont(const QFont &font);

    //MEINS
    /**
    * @brief Adds a new DiagramItem to this scene. The created item is returned as pointer
    *
    * @fn DiagramItem *addNewItem(DiagramItem::DiagramType type, QString text, int width, int height, int x, int y)
    * @param type
    * @param text
    * @param width
    * @param height
    * @param x
    * @param y
    * @return DiagramItem
    */
    DiagramItem *addNewItem(DiagramItem::DiagramType type, QString text, int width, int height, int x, int y, int column);

    /**
    * @brief Adds a new Arrow to the scene. Returns true if the arrow is already a child of the startitem. Else false is returned.
    *
    * @fn bool addNewArrow(DiagramItem *startItem, DiagramItem *endItem)
    * @param startItem
    * @param endItem
    * @return bool
    */
    bool addNewArrow(DiagramItem *startItem, DiagramItem *endItem);

public slots:
    void setMode(Mode mode);
    void setItemType(DiagramItem::DiagramType type);
    void editorLostFocus(DiagramTextItem *item);

signals:
    void itemInserted(DiagramItem *item);
    void textInserted(QGraphicsTextItem *item);
    void itemSelected(QGraphicsItem *item);

private:
    bool isItemChange(int type);

    DiagramItem::DiagramType myItemType;
    Mode myMode;
    bool leftButtonDown;
    QPointF startPoint;
    QGraphicsLineItem *line;
    QFont myFont;
    DiagramTextItem *textItem;
    QColor myTextColor;
    QColor myItemColor;
    QColor myLineColor;
};

#endif
